Trimming apparatus for type-line-casting machines.



H. DEGENBR. TBIMMING APPARATUS or TYPE LINE CASTING MA CHINES.

AYPLIGATION FILED SEPT. 15. 1911.

Patented Mar. 4, 1913.

' are cast, each pair of knives.

. tion, and Fig. 3 is UNITE TRIMMING APPARATUS OF 1 s rarns PATENT onr ron. v

OF BERLIN, GER-MANY, ASSIGNOR TO MERGENTHALER LINOTYP COMPANY, A CORPORATION OF NEW YORK.

TYPE-LINE-CASTING MACHINES.

Patented Mar. 4, 1913.

Application filed September 15'1911. Serial No. 649,528.

To all whom. it may concern Be it known that I, Hnmmcn Dnopsnn. a subject of the German Emperor, residing at 26 l-Iollmannstrasse, Berlin, in the (terman Empire, have invented new and useful Improvements in the 'lrimming App: ratus of Type Jane-Casting Machines, of which the following is a specification.

This invention relates to the trimmin; apparatus of type line or type bar casting machines such as those known commercially under the trade mark Linotype."

It. has already been proposed to providc a plurality of pairs or sets of trimming knives capable of being; turned as a siogde entity, about a vertical axis so as to present one or other of the said sets in position for trimming the cast typo bars according to the particular body dimension of the respective type bar, the two knives of each pair being situated at a distance apart corresponding to the body dimension of the type bars to be fore of the mold in which the said tvpc bars in that respect. differing from the other pair or pairs. In that arrangement the substitution in operative position of one pair of knives imanother pair was effected manually. and the object of the present invention is to provide for this substitution being cllectcd automatically.

.-'&ccording to this invcntion. 'ncansv arc provided whereby each mold automatically brings the pair of knives appropriate to that mold into register therewith.

In the accompairvingr drawings '1 iS a front elevation "partly broken away and partly in vertical section, of the unproved devices; Fig. .2 is a view of the samc partly in plan and partly in horizontal soca right-hand side elevamechanism. showing thc diil'ercnt pairs of ive trimming position of part of the means for locking the knives in their respect tions.

The trimming knives 1, as prcviously stated, are mounted in pairs, the two knivcs of each pair being situated at a distance apart corresponding to the width of the mold in connect ion with which thcy arcintended to be used, and as thc slug is passcd between them, its sides are trimmed hr the outer edges of the knives in the usual manner.

trimmed by them and thcrc- The knives 1, of which, in; the example illustrated. there are four pairs, are each of approximatcly triangular form in transverse section, and at their ends they are rigidly secured together by rings 3,4 so as to form virtualLya complete entity. 3, t are each provided with a short vertical trunnion 5. (3 respectively, each of which is capable of rotating about a common vertical axis in the respective bearing 7, 8 fastto the machine .t'rame. Below the bearing 8, the trunnion t) has rigidly attached to it, a toothed wheel 9 and a locking head or collar It), the latter provided with as many diamctrical holes 11 as there are pairs of trinnuing knives 1, these holes, if desired, also extcnr'lingz through the trunnion 6.

1'2 is the rotating mold wheel carrying, in the example illustrated. two molds 13, 14, butthere may be more than this number of molds on the wheel 12. The molds 13, 14, or more strictly speaking, the caps 13, 14 thereof, each carry a pin or stud 15, 16 respcctivcly each of which is at a different radial distance from the axis of the mold wheel 12. The studs 15, 16 rotate with the mold whcel and are so positioned that. (duriug'thcir rotation. they engage with the vertical edge of a plate 17 which is capable of sliding horizontally in or on a stationary n'uidc 18. movement of the said plate in one direction being etl'cctcd by a compression spring 19 and in the reverse direction (in opposition to the spring 19) by the action of the studs 15. 16 against the left-hand edge of thc plate 17. The-sliding plate 17 has rigidly attached'to it a toothed rack 20 in constant gear with the before-described wheel 9 so that as this plate is moved in or on its guide 18 it turns the knives 1 about the axis of the trunnions 5, 6 to a corresponding extent.

.\s the studs 15, 16 are. as aforesaid, situatcdat ditlcrentradial distances from the axis of the-mold wheel 12, it is obvious that as each mold is turned into the vertical position in front of the. ejector 21. and at the back of the trimming knives l. the latter will be turned about their pivotal axis-to corrospondiugly varying extents which are so dctcrniined that the particular knives/1 ap aa'tainiug to the mold then in the ejectlug position. are prcscntcd to the front of that mold.

In order to secure the knives 1 against The rings rotation when the type line is being forced between them, a locking pin 22, Fig. 3, is so arran ed as to enter and engage with the particular hole 11 which, at the time, alines with it. This locking pin 22 is rigidly secured to a part of the machine which operates simultaneously with the ejectment of the type bar, and preferably moves in a direction parallel with the axis of the mold wheel, for example it may be secured to the mold wheel slide 23. The forward end of the locking pin 22 is tapered so that it may freely enter the holes 11, and behind this tapered end it is of substantially the same diameter as that of the holes 11, so that,

' even if there be backlash between the teeth of the wheel 9 and the rack 20, this pin will serve both to accurately pdsition the knives 1 and rigidly secure them against accidental displacement. During the next ensuing retract-ionof the mold wheel slide 23 the locking pin 22 is disengaged from the locking head 10 so as to leave the knives 1 free to be re-positioned by the appropriate stud 15 or 15.

Having thus described my invention, I

declare that what I claim and desire to secure by Letters Patent is z- '1. In a type linecasting machine, the combination with a plurality of pairs of trimming kn'es capable of being turned about. a commo. axis and a mold wheel carrying a plurality of molds of different body dimensions, of means adapted to automatically turn the knives about the said axis to present to each mold brought into ejecting position a pair of knives of a corresponding body dimension.

2. In a type line casting machine, the combination with a plurality of pairs of trimming knives capable of being turned about a common axis, a rotating mold wheel,

and a plurality of molds of different body dimensions on the mold wheel, of means on the mold wheel adapted to automatically turn the knives about the said axis to varying extents, to present to the respective molds pairs of knives differing in body dimension in accordance with the varying body dimensions of the said molds.

3. In a type line casting machine, the

combination with a plurality of pairs of trimming knives capable of being turned about a common axis, a rotating mold wheel, and-a plurality of molds carried by the mold wheel, of a plurality of studs carried by the mold wheel, at different radial distances from the axis of the latter, a gear wheel fast to the knives, a rack meshing with the gear wheel, and means operable by the studs to move the rack to varying extents.

4. In a type line casting machine, the combination with a plurality of pairs of trimming knives capable of being turned about a common axis, a mold wheel carrying a plurality of molds and an organ moving in adircction parallel with the axis of the mold wheel, of a locking head fastto the knives and a device on the said organ adapt ed to engage with the locking head to secure the knives against rotation.

5. In a type line casting machine, the combination with a plurality of pairs of trimming knives capable of being turned about a common axis, a rotating mold wheel, and a plurality of molds of different body' dimensions on the mold wheel, of means on the mold wheel adapted to automatically turn the knives about the said axis to varying extents, and means operative to temporarily lock the dili crent pairs of knives in their respective trimming positions.

6. in a type line casting machine, the combination with a plurality of pairs of knives capable of being turned about a common axis, a rotating mold wheel, and a plurality of molds of different body dimen- -sions on the mold wheel, of a plurality of studs on the mold wheel at different radial distances from the axis of the latter, a gear wheel fast to the knives, a rack meshing with the gear wheel, a plate carrying the rack, guides on which the said plate is free to slide and with which plate the studs on the mold wheel engage to move it in one direction, and power means acting on the plate to move it in the reverse direction.

7. In a typo line :asting machine, the combination with a plurality of pairs of knives capable of being turned about a common axis, a rotating mold wheel, anda plurality of molds of different body dimensions on the mold wheel, a plurality of studs on the mold wheel, atdifferent radial distances from the axis of the latter, a gear wheel fast to the knives, a rack meshing with the gear wheel, and means operable by the studs to move the rack to varying extents, of an organ carrying the mold Wheel and moving with it in a direction parallel with its axis, a locking head fast to the knives and a device on the said organ adapted to engage with the locking head to secure the knives against rotation.

S. In a type line casting machine, the combination with a plurality of pairslof knives capable'of being turned about a common axis, a rotating mold wheel, and a plurality of molds of different body dimensions on the mold wheel,'a plurality of studs on the mold wheel, at different radial distances from the axis of the latter, a gear wheel fast to the knives, a rack meshing with the gear wheel, a plate carrying the rack, guides in which the said plate is free to slide and with which the studs on the mold wheel engage to move it in one direction, and ower means acting ori the plate to move it in the reverse direction, of a locking head fast to the knives, an organ carrying the mold wheel and moving with it in a direction parallel with its axis, and a device on the said organ adapted to engage with the locking head to secure the knives against rotation.

9. In atypographical machine, the combination of a plurality of movable molds, a corresponding plurality of sets of trimming knives, and means vherehy the move ment of a selected mold to operative posit ion brings the corresponding set of trimming knives into operative position.

10. In a typographical machine, the combination of a plurality of movable molds, a corresponding plurality of sets of trimming knives, and means for simultaneously moving the selected mold and its corrcspending set of knives into operative re- 511M071.

II. In a typographical machine, the cornhination of a plurality of sets of trimming knives, a corresponding plurality of devices for presenting the slug thereto, and means for simultaneously moving the selected de vice and its corresponding set of knives into operative relation.

12. In a typogra hical machine, the combination of a molt carrier provided with a lurality of molds, a corresponding plurality of sets of trimming knives therefor, and connections to the carrier whereby a selected mold and its corresponding set of trimming knives are brought into operative relation.

13. In a typographical machine, the combination of a mold wheel carrying a plurality of molds, a corresponding plurality of sets of trimming knives, and means whereby the rotary movement of the mold wheel brings a selected mold and its correspondin set of trimming knives into operative re ation.

In witness whereof I have hereunto set my hand in the presence of two witnesses.

HEINRICH DEGENERN Witnesses Hmvar I'IASPER, W oLoiiMAn IIAnP'r. 

